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Improvement in the slotted wall boundary condition by numerical methods

โœ Scribed by Charlie H. Cooke

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
402 KB
Volume
22
Category
Article
ISSN
0378-4754

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โœฆ Synopsis

The constant coefficient in the classical slotted waZl boundary condition is expressed as a line integral of the slot-induced, rapidly varying velocity. Aerodynamic panel methods which employ a vector continuous Loading concept in order to minimize panel Zeakage are used to compute the inviscid flow through periodic slots, from which the slotted wall coefficient is evaluated by means of nzunerical integration. This approach is expected to yield improved resuZts, inasmuch as no idealizations in slat geometry are required. For the first time, the method affords the capability to obtain insight into the effects upon the slotted wall coefficient of minor alterations in slat shape, such as geometry changes which leave invariant the openness and thickness ratios. The coefficient is numerically evaluated for slat shapes typical of test section design.

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